加热卷烟气溶胶粒相物化学成分的差异

Differences in chemical components in aerosol particulate matters from heated tobacco products

为系统评价不同品牌典型加热卷烟的整体差异,采用气相色谱-四极杆/静电场轨道阱高分辨质谱(GC-Q Exactive Orbitrap MS),研究了19种加热卷烟样品气溶胶粒相物的化学成分,并对化合物的种类和相对质量分数进行了差异性统计分析。结果表明:①同一品牌加热卷烟样品气溶胶粒相物化学成分的种类和相对质量分数相似。②所选样品的PCA得分图中不同品牌加热卷烟样品区分明显,国外加热卷烟样品在空间上分布比较集中,且以品牌为聚类团聚在一起,国内加热卷烟样品分布相对离散。③以所选国内加热卷烟样品为对照,国外加热卷烟样品气溶胶粒相物中质量分数显著降低和升高的化合物分别有56种和9种。

In order to evaluate the differences in typical heated tobacco products of different brands,the chemical components in the aerosol particulate matters from 19 heated tobacco product samples were determined by gas chromatography-quadrupole/exactive orbitrap mass spectrometry(GC-Q Exactive Orbitrap MS).Differential statistical analysis of chemical component types and relative mass fractions was performed on the particulate matter.The results showed that:1)Chemical components in aerosol particulate matters from the heated tobacco product samples of the same brand were similar in type and relative mass fraction.2)Based on PCA score plots from the selected samples,there was a clear distinction between different brands of heated cigarette samples.Foreign heated cigarette samples had a relatively concentrated spatial distribution and were clustered by brand,while the distribution of domestic heated cigarette samples was relatively discrete.3)Compared to the selected domestic heated cigarette samples,there were 56 and 9 components in the aerosol particulate matters from the foreign heated cigarette samples that significantly decreased and increased in their mass fractions,respectively.